Stem-winding watch.



PATENTED AUG. 25, 1903.

W., E. PORTER. STEM WINDING WATCH.

APPLmAnom mun we., 1ol 1900.

N0 MODEL.

mlllllllll `UNITED STATES Patented August 25, 1903.

WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE NEW HAVEN CLOCK COMPANY, OF NEW HAVEN, CONNECTICUT, A COR- PORATION OF CONNECTICUT.

STEM-WINDING WATCH.

:SPECIFICATXQN forming part of Letters Patent No. 737,474, dated August 25, 1903.

VApplication filed December 10l 1900. Serial No. 39,423. (No model.)

T0 all whom it may concern/.-

Be it known that I, WILSON E. PORTER, a

resident of the city and county of New Haven,

in the State of Connecticut, have invented a new and useful Improvement in Stem-Winding Mechanism for Watches, of which the following is a full, clear, and exact description when taken in connection with the accompanying drawings, which form a part thereof, and in which- Figure l represents a top view of a watch with the face removed embodying my invention; Fig. 2, a similar view, partly broken away, of the connection between the stemarbor and Winding and setting trains, the bridge being shown by dotted lines; Fig. 3, a back view of the stem-arbor, lever, and associated parts on the under side of the supporting-plate, the stem being shown in section; Fig. 4, an end view of the watch-movement with the stem and arbor omitted; Figs. 5 and 6, side and end detail views of the operating-pinion.

In all figures similar letters ofreference represent like parts.

This invention relates to watches, and more particularly to the stem-winding mechanism, and has for its object the production of a novel, simple, and efficient means operated by the stem for winding and setting the watch.

To this end the invention consists of the various improvements and combinations of parts set forth and claimed hereinafter.

The arbor of the stem is provided with a pin-and-slot connection with the operatingpinion, so that it may readily be removed, but while assembled positively rotates the pinion and upon its longitudinal movement without disengagement from the pinion shifts a yoke by which the connection from the pinion to the winding-train is disconnected and that with the setting-train established, or vice versa. This peculiar connection is especially suitable for such a construction, as the pin of the connection need not tit. These pins need not iit in the slots with any particular nicety and may be made of such length that they will engage the slots of journals of various widths and styles. The arbor, with pins, does not have to extend in the exact line of the axis of the slot of the journal, as in the case ot' a squared arbor, as a slight rocking or inexactness may be allowed, it being merely necessary that the pin or pins on the arbor sufficiently engage in the slot or slots tocommunicate the rotary movement of the arbor by thepressure of the pin on thev side of the slot. Moreover, the liability to wear is diminished as a more positive engagement is 6o made, and as the journal merely receives the end of the arbor in its interior and not the full width of the arbor and pin or engaging portions the journal may be reduced in size, which is an important desideratum in small watches.

Referring to the drawings, the parts desig nated by the letter A represent the case of the watch; B and B', the supporting-plates for the movement; C, the hollow pendant, and 7o D the outer rotary end of the'stem or crown.

d designates the stem-arbor, with d a collar or flange to limit the longitudinal movement of the arbor. .Y

Erepresents a pinion with its journal e bearing in a depending angeb on the plate B. The outer end of this journal e is provided with longitudinal side slots e', adapted to receive the outer ends of a laterally-projecting pin d2 on the inner end of the arbor 8o d. The arbor d when the pin d2 is engaged in the slot or slots e' of the pinion-journal e communicates its rotary movement to the j pinion E, while still permitting a limited. independent longitudinal movement. The eX- treme inner end projects through the pinion E and bears against a lever F, pivoted at f on the under side of the plate B, Fig. 3.

G designates a lever or yoke pivoted at g and connected at one end through a slot h in 9o the plate B with the lever F, so that the movement of lever E is transmitted tolever or yoke G. A gear II is mounted on the under side of the yoke Gto mesh with a gear I, concentric with the pivot of the yoke G and meshing with the pinion E. The gear I-I engages the wheel .I of the time-train (not shown) when the yoke G is swung in one direction and the wheel K of the setting-train L and M when the yoke is swung in the reverse direction. roo A spring N holds the yoke G, so that normally the connection between pinion E and time-train is established, until by the swinging of lever F upon the longitudinal movement of arbor d the connection is broken and that between the pinion E and thesettingtrain established. The rotary movement of the stem-arbor is communicated to the pinion E by means of the engagement of the pin in the slot or slots of the pinion-journal. No exact t of the arbor in the journal is necessary, for so long as the pin engages in the slot or slots lthe movement may be operated by the stem-arbor.

Having noW described my invention, what I claim, and desire to secure by Letters Patent, isy In a stem-Winding mechanism for a Watch, or similar article, the combination with the Winding and setting trains; of a gear adapted to be engaged With one or the other of said trains; a pinion constantly in engagement zo WILSON E. PORTER.

Witnesses:

EUGENE CARTIER, THOMAS RAETER. 

